Red/purple spots on breasts

Erin • Mama to a 4 year old boy. Trying for baby #2

As I was about to shower yesterday, I noticed in the mirror there were strange spots on both of my boobs below the nipples. They look kind of red/purple and kind of look maybe veiny. I’ve never had this before and the fact that it’s on both is weird. It not bruises. Nothing has happened out of the ordinary. Has this happened to anyone before? The pictures are hard to tell.